1.1k citations · 5.7k across the 83 of their papers we have counts for
3 papers · 1 filter
On the cool gaseous haloes of quasars
E. P. Farina, R. Falomo, R. Decarli +2
We present optical spectroscopy of projected QSO pairs to investigate the MgII and the CIV absorption features imprinted on the spectrum of the background object by the gaseous hal…
On the redshift of the blazar PKS0447-439
Michele Fumagalli, Amy Furniss, John M. O'Meara +3
PKS0447-439 is one of the BL Lacertae objects that have been detected at very high energy. There has been a recent report of a lower limit of z>1.246 for the redshift of this blaza…
The optical spectrum of PKS 1222+216 and its black hole mass
E. P. Farina, R. Decarli, R. Falomo +2
We investigate the optical spectral properties of the blazar PKS 1222+216 during a period of 3 years. While the continuum is highly variable the broad line emission is practically…